can't boot without "root=..." on kernel cmdline

[Jesse Pollard]

almesber en lrc.di.epfl.ch:
>Chuck Lever wrote:
>> without specifying "root=...", the kernel panics on boot with the message
>> "VFS: Cannot open root device 00:80".  i have no idea where it's getting
>> major=0, minor=128.  specifying "root=/dev/sda1" on the LILO: cmdline
>> allows linux to boot correctly.  also the distributed RedHat kernels boot
>> correctly without "root=..."
>>Is this plain 2.3.39 or did you make any changes to
>>init/main.c:name_to_kdev_t or to include/linux/kdev_t.h:to_kdev_t ?
>>
>First, you should check the output of  lilo -q -v  for the lines that say
>Options: "root=801"  or such. If all of them agree on "root=801", it's
>init/main.c:name_to_kdev_t that is messing things up.
>
>If one of them says something like "root=80" instead, it's somewhere
>between stat(2) and LILO's bsect.c (look for "root=", without the double
>quotes), possibly with glibc in the picture too. Let's hope it's
>something else ;-)

umm. The last time I got this type of error it was because I had just gotten
my SCSI controler and copied the kernel to the new disk from an IDE system
disk.... Perhaps an "rdev" could set the root device.
-------------------------------------------------------------------------
Jesse I Pollard, II
Email: pollard en navo.hpc.mil

Any opinions expressed are solely my own.

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